Welt-indenting machine



I. H. RIGBY. WELT INDENIING MACHINE.

APPLICATION FILED JAN. 24, 1916- Patented Aug. 31, 1920. 2

UiTEn .T01-1N :tr Bre-BY, or BEVERLY, MASSACHUSETTS, assTeNoE, EY MEsNE assreN'MENTs,

To UNITED sillon MACHINERY coEroEaTicN, 0E raTEEsoN, NEW JERSEY, a con- PORATION OF NEV JERSEY.

WELT-INDENTING MACHINE.

Specification of Letters Patent.

Patented aan. e1, 1920.

Application led January 24, 1916. Serial No.. 73,884.

To all whom t may concern:

Be it known that I, JOHN H. Riser, a citizen of the United States, residing at Beverly, in the county of Essex and State of lY/iassachusetts, have invented certain new and useful improvements in lelt-Indenting Machines; and r do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to shoe machines for finishing or ornamenting boots and shoes, and it has special reference to machines of the above indicated class which are provided with rapidly reciprocating or vibrating tools that are heated from a suitable external source to a degree best suited to the character of the particular work to be performed.

iiivhen finishing a shoe sole or forming a stitch impression upon a welt, knurling, or producing other ornamental impressions upon the marginal er edge portions of a sole, it is almost the universal practice to heat the movable tool operating upon the sole by means of gas flame. To obtain effective results the gas flame is directed immediately upon the tool, which often serves to coat the tool with soot. The gas flame contacts only a portionof the tool and often has to be quite large to heat the entire tool to the required temperature. InA directing thenaked flame upon the tool, the temper is drawn from the tool so that it soon becomes worn and worthless.

rihe primary object of the present invention is to provide a simple and effective device for hea-ting the vibrating tool of a sole finishing or ornamenting machine which will effectively heat the tool to the desired temperature and overcome the objections mentioned above.

In accordance with this object, one feature of the invention contemplates the provision in. a machine having a vibrating tool for finishing or ornainenting a shoe, of a membercf a comparatively large volume of a good heat conducting material which is mounted adjacent the tool, and means for uniformly heating the member to heat the tool by conduction.` iVith this construction a large volume of heat can be stored in the heating member to quickly and uniformly heat the tool. The temperature of the heating member is substantially the same as that required for the tool, so that no part of the tool is exposed to a. temperature high enough to injure it. To provide a good contact between the heating member and the recipiocating or vibrating tool, and to provide for wear, the heating member is movably mounted on the machine frame and yielding-ly held in contact with the tool.

The invention aiso includes certain features of construction and combinations of parts which are hereinafter described and set forth in the claims.

The various features of the invention are illustrated in the accompanying drawings, in which Figure 1 is a view in side elevation, partly in section, of the upper portion of a welt indenting and burnishing machine embodying the preferred form of the invention; Fig. 2 is a view in vertical section taken on the line 2 2 of Fig.A 1, showing the tool heating member in elevation; Fig. 3 is a plan view of the tool heating member showing its relation tothe tool; and Fig. l is a detail sectional view taken on the line 4 4 of Fig. 8.

rlhe welt indenting and burnisliing machine shown in the drawings is substantially the saine in its construction and operation of parts as the machine shown in the patent to Casgrain, No. 1,109,199, dated September 1, 1914:. This machine is provided with a shoe support 10 and a vertically vibratory or reciprocatory tool which comprises a working element in the form of a toothed indenting wheel 12 and a shank-portion or tool carrier 1G. T he lower end of the shankportion ofthe tool or tool carrier is provided with a clamp 1i which holds a stud 13 upon which is mounted the working element of the tool, which in the present construction, constitutes the indenting wheel 1Q. The tool is reciprocated to cause the indenting wheel to strike a series of blows in rapid succession upon the work by means of a series of rolls 18 which are carried in a head 2O upon the main driving shaft 22 and which operate upon the upper end of the tool. The sole is fed during the welt indenting operation by positively rotating the work support l0 through means of an intermediate gear 24 which has a gear connection with a shaft 26 that is driven from the main driving shaft 22 by a worm gear 28. The parts thus tar described are substantially the same as those shown in the patent above, and reference is hereby made to said patent for a detailed description of the same. i

The Vindenting wheel l2 of the tool is heated during the operation of the machine in order to positivelyl set the indentations and, if desired, to burnish the face of the indentations. To heat the tool, an electrically heated block is held in sliding contact with the tool carrier 16. The contact heating block 30 is constructed of a metal which is .a good conductor of heat and has a face 32 which is held in contact with the back of Ythe tool carrier 16 and projects part way across the sides. The body of the block 30 is chambered out at 34 to receive an electrical resistance heating unit 36, which is held in place by means of a screw 38. The heating member is provided with a boss which is pivoted between a pair of ears 42 :termed on a bracket 44. VThe bracket 44 is held in position Vby the usual bolts 46 that clamp the head Y.casting 48 upon the machine fframe 50. rfhe pivotal axis of the heating member is parallel with the face of the tool carrier 16, and the heating member 1s con- Y Y structed to swing down against the tool carrier'by gravity. To maintain a good heat conducting contact'with the tool carrier, the

contactY face 32. of the heating block is pressed against the tool carrier by means of a spring 52 which,is-mounted between an arm 54 projecting from the bracket 44 and a lug 56 mounted upon the heatingl member 30. This `spring always holds the heating member in contact with the tool carrier and automatically takes uprfor any wear between the tool carrier and the heating Ymem- Ving with electrical power gives a more uniform and steady heat than has been attained formerly. The connection with the power is simple, and the heat is very clean. The heating member has a comparatively large volume. ofmetal sorthat a large volume oit,V heat can be storedA therein` to quickly heat the tool to the temperature of the heating member. The heat is conducted directly from the heating member into the shank portion of the tool orl tool carrier, which contains and incloses the indenting wheel so that the entire machine head is not heated in heating the tool. It heat is lost by conduction through the bracket 44, it may be easily insulated from the machine frame by means of the usual mica V washers. The temperature of the heating member is substantially the same as the temperature to which the tool is heated, and this temperature is not high enough to affect the temper `of the indenting wheel.

i-rlthough the invention has been shown and described as used in a welt indenting and burnishing machine, obviously it could be embodied in aV knurling machine, a stitch impression machine, and many of the other types of machines used in ornament-ing and finishing shoe stock. It is to be understood, f

therefore, that, except as delinecl by the claims, the invention is not limited.l to use in a welt-indenting and burnishing machine.

Moreover, in its broader aspects, the invention is not restricted lto the specific torni of tool and its mode .of mounting and manner of operation, it being evident that the advantages and benelits of the invention may be secured by the'use of a tool, the working element and the shank-portion orV carrier of which are materially modified in construction.V The broad feature lies in the employment of a reciprocatory or vibrator-y toolor member ofany character which is heated by conduction from a remotely located source through the agency of a contact block disposed in proximity thereto. In the claims therefore, except as more specilically defined, the term tool is Vused in its generic sense to mean any form or type of tooland includes both the working element and its carrying or supporting member. y Y

Having thus described my invention, what is claimed'as new is l. A machine for operating upon the marginalportions of shoe soles having, in combination, a supportV for a shoe, a movable tool for engaginga shoe positioned upon the support, a relatively fixed Contact block adjacent the tool, means for heating the block to heat the tool by conduction, and means for moving the tool across the face of the Vheating block to act upon the shoe stock. ,Y Y. 1

2. A machinefor operatingV upon the marginal portions of shoe soles having, in com- 'binatioma support for a shoe, a movable tool for acting upon a shoe positioned upon the support, a contact block adjacent said tool, means formoving the tool across the face ofthe block in Vacting upon the shoe stock, an electric heating member in said block, and a circuit for supplying energy to the heating member.

3. A machine tor operating upon the marginal portions oi' shoe soles having, in combination, a support for a shoe, a tool for acting upon the shoe stock, means to reciprocate said tool t'o deliver impact blows upon the shoe stock, a contact block for engaging the tool and means for heating said block.

4;. A machine for operating upon the marginal portions of shoe soles having, in combination, a support for a shoe, a movable tool comprising a carrier and a Working element carried thereby for acting upon the shoe stock, a Contact block for engaging the carrier movably mounted adjacent said carrier, means for yieldingly holding said block in engagement With the carrier during its movement, and means to heat the block.

5. A machine for operating upon the marginal portions of shoe soles having, in combination, a support ior a shoe, a tool for operating upon the marginal portion of the shoe sole, a contact block pivotally mounted adjacent said tool and having a tool engaging face, a spring for holding the face in engagement with the tool, an electric heating unit secured in said block, means Jfor supplying energy to said unit, and means to reciprocate said tool across the tace of said block to operate upon the shoe stock.

6. A machine for operating upon shoesrhaving, in combination, a tool for operating upon the shoe, means for reciprocating the tool to operate upon the shoe, a heating block supported adjacent the path of movement of the tool, means for yieldingly holding the block in engagement with the tool during its movements, and means for heating the block.

7. A machine for operating upon shoes having, in combination, a movable tool tor acting upon a shoe, a yieldngly mounted contact block pressed into sliding engagement with said tool, means for moving the tool across the face of said contact block,

and electrical means for heating the contact block whereby the tool is heated by conduction.

8. A machine Jfor operating upon shoes having, in combination, a movable tool comprising a carrier and a Working element on said carrier for acting upon a shoe, a relatively stationary but movably mounted contact block Jfor engaging said carrier, means for yieldingly holding said block in engagement With the movable carrier, and means for heating said block.

9. A machine for operating upon shoes having, in combination, a movable tool comprising a carrier and a Working element mounted thereon, a relatively stationary contact block yieldingly held in sliding engagement with said movable carrier, and means for heating said contact block to heat said Working element by conduction.

10. A machine Jfor operating upon shoes having, in combination, a movable tool for acting upon a shoe, a relatively stationary contact block yieldingly held in sliding engagement with said tool, and means for heating said contact block to heat said tool by conduction.

ll. A machine for operating upon shoes having, in combination, a movable tool comprising a carrier and a Working` element on said carrier Jfor acting upon a shoe, a contact block pivotally mounted adjacent said carrier and having a contact Jface, yielding means for holding the contact tace in engagement with said movable tool carrier, and means for heating said Contact block to heat said tool.

12. A shoe machine having, in combination, means for supporting the marginal portion of a shoe-sole, a movable tool having a Working portion at one end for operating thereon, means Jfor longitudinally reciprocating said tool, a relatively stationary contact block in sliding engagement with the tool adjacent its Working portion, and means for heating the contact block to heat the tool by conduction.

JOHN H. RIGBY.

It is hereby certified that in Letters Patent No. 1,351,064, granted August 31,

1920, upon the application of John H. Rigby, of Beverly, Massachusetts, for an improvement in "Welt-Indenting Machines, errors appear in the printed specication requiring correction as follows: Page l, line 39, strike out the Word sole page 3, line 84, claim 11, strike out the Word tool and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofice.

Signed and sealed this 19th day of October, A. D., 1920.

M. H. COULSTON, Acting Commissioner of Patents.

[SEAL] 

